Implemented suggestions from meeting

src/main/java/it/inaf/ia2/transfer/persistence/FileDAO.java

@@ -247,7 +247,6 @@ public class FileDAO {
 
     public void setBranchLocationId(String rootVosPath, String jobId, int locationId) {
         
-        // TODO: validate rootVosPath as a vos_path
         String cte = "SELECT n.node_id AS id\n"
                 + "FROM node n\n"
                 + "JOIN node p ON p.path @> n.path\n"

src/main/java/it/inaf/ia2/transfer/service/PutFileService.java

@@ -126,12 +126,14 @@ public class PutFileService {
                 LOG.warn("Destination file {} size mismatch with source", destinationFile.toPath().toString());
             }
 
-            if (!sourceFileInfo.getContentType().equals(destinationFileInfo.getContentType())) {
+            if (sourceFileInfo.getContentType() != null && 
+                    !sourceFileInfo.getContentType().equals(destinationFileInfo.getContentType())) {
                 LOG.warn("Destination file {} content type mismatch with source {} {}", destinationFile.toPath().toString(),
                         destinationFileInfo.getContentType(), sourceFileInfo.getContentType());
             }
 
-            if (!sourceFileInfo.getContentMd5().equals(md5Checksum)) {
+            if (sourceFileInfo.getContentMd5() != null && 
+                    !sourceFileInfo.getContentMd5().equals(md5Checksum)) {
                 LOG.warn("Destination file {} md5 mismatch with source {} {}", destinationFile.toPath().toString(),
                         destinationFileInfo.getContentMd5(), sourceFileInfo.getContentMd5() );
             }